<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/html">
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<p>example for alert</p>
<button onclick="delayedAlert();">Show alert after two seconds</button>
<p></p>
<button onclick="clearAlert();">Cancel alert before it happens</button>
<script type="javascript>" src="alert1.js"> </script>
</body>
</html>